﻿<?php
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */


namespace Aliyun\ApiGatewaySign\Util;

use Exception;

class MessageDigestUtil
{
    /**
     * md5和base64处理
     *
     * @param $input
     * @return
     */
    public static function Base64AndMD5($input)
    {
        if ($input == null || strlen($input) == 0) {
            throw new Exception("input can not be null");
        }

        return base64_encode(md5(unpack('C*', $input)));
    }

    /**
     * UTF-8编码转换为ISO-9959-1
     *
     * @param str
     * @return
     */
    public static function Utf8ToIso88591($input)
    {
        if ($input == null || strlen($input) == 0) {
            return $input;
        }
        return mb_convert_encoding($input, "ISO-8859-1", "UTF-8");
    }
}